[Chemical Characteristics of Shallow Groundwater in the Yellow River Diversion Area of Henan Province and Identification of Main Control Pollution Sources].

Autor:	Wang S; Institute of Natural Resources Monitoring and Comprehensive Land Improvement of Henan Province, Zhengzhou 450061, China.; Key Laboratory of Protection and Restoration of Water and Soil Resources in the Middle and Lower Reaches of the Yellow River Basin, Ministry of Natural Resources, Zhengzhou 450061, China., Ren Y; Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang 050061, China.; Key Laboratory of Groundwater Sciences and Engineering, Ministry of Natural Resources, Shijiazhuang 050061, China., Guo H; Institute of Natural Resources Monitoring and Comprehensive Land Improvement of Henan Province, Zhengzhou 450061, China.; Key Laboratory of Protection and Restoration of Water and Soil Resources in the Middle and Lower Reaches of the Yellow River Basin, Ministry of Natural Resources, Zhengzhou 450061, China., Cao WG; Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang 050061, China.; Key Laboratory of Groundwater Sciences and Engineering, Ministry of Natural Resources, Shijiazhuang 050061, China., Li XZ; Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang 050061, China.; Key Laboratory of Groundwater Sciences and Engineering, Ministry of Natural Resources, Shijiazhuang 050061, China., Xiao SY; College of Geosciences and Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450046, China.
Jazyk:	čínština
Zdroj:	Huan jing ke xue= Huanjing kexue [Huan Jing Ke Xue] 2024 Feb 08; Vol. 45 (2), pp. 792-801.
DOI:	10.13227/j.hjkx.202303263
Abstrakt:	The northern plain of Henan in the lower reaches of the Yellow River is an area where the Yellow River is frequently diverted. The shallow groundwater quality in this area is poor， and many types of components have been found to be exceeding the limit value； however， the contribution of various environmental factors to water quality needs to be further quantified. In order to clarify the genesis of water quality of shallow groundwater in the study area， 330 groups of shallow groundwater samples were collected via a regional water quality survey. The evolution of shallow groundwater quality in the Yellow River diversion area of northern Henan was revealed using the principal component-absolute principal component score-multiple linear regression （PCA-APCS-MLR） model. The results showed that the components with a shallow groundwater excess rate greater than 10% in descending order were manganese， iron， total hardness， total dissolved solids， sodium， fluoride， arsenic， chloride ions， sulfate， and ammonium. In particular， the excess rate of manganese reached 76%. The four factors of dissolution enrichment， native origin of soil， redox conditions， and agricultural activities were identified as the main reasons for poor groundwater quality， which accounted for 71.24% of the cumulative interpretation rate of variance. In addition， the recharge from the surface water also influenced the groundwater quality. The effects of dissolution between the water and aquifer matrix and redox condition in the aquifer of the Yellow River dried-riverway like Xinxiang were significantly enhanced， resulting in the increasing concentration of iron， arsenic， total hardness， TDS， and other components in groundwater. Fluoride enrichment was caused by dissolution enrichment， the origin of the soil， and lateral replenishment of the Yellow River. Groundwater with high manganese concentration was widely affected by the soil matrix. Nitrate pollution of the groundwater was caused by the extensive use of chemical fertilizers in agricultural activities in individual areas.
Databáze:	MEDLINE
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